Finding the Fourth Proportional to 136.99, 205.30 and 104.95
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Solution
The fourth proportional to 136.99, 205.30 and 104.95 is: 157.28
Step by Step Solution
- Step 1: Write the proportion equation
136.99 : 205.30 = 104.95 : x - Step 2: Convert to fraction form
136.99/205.30 = 104.95/x - Step 3: Cross multiply
136.99x = 205.30 × 104.95 - Step 4: Simplify right side
136.99x = 21,546.24 - Step 5: Solve for x
x = 21,546.24/136.99 - Step 6: Final answer
x = 157.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.